// license:BSD-3-Clause // copyright-holders:Aaron Giles,Nicola Salmoria /*************************************************************************** Art & Magic hardware ***************************************************************************/ #include "emu.h" #include "cpu/tms34010/tms34010.h" #include "video/tlc34076.h" #include "includes/artmagic.h" #define INSTANT_BLIT 1 /************************************* * * Inlines * *************************************/ inline uint16_t *artmagic_state::address_to_vram(offs_t *address) { offs_t original = *address; *address = (original & 0x001fffff) >> 4; if (original < 0x001fffff) return m_vram0; else if (original >= 0x00400000 && original < 0x005fffff) return m_vram1; return nullptr; } /************************************* * * Video start * *************************************/ void artmagic_state::video_start() { m_blitter_base = (uint16_t *)memregion("gfx1")->base(); m_blitter_mask = memregion("gfx1")->bytes()/2 - 1; save_item(NAME(m_xor)); save_item(NAME(m_is_stoneball)); save_item(NAME(m_blitter_data)); save_item(NAME(m_blitter_page)); } /************************************* * * Shift register transfers * *************************************/ TMS340X0_TO_SHIFTREG_CB_MEMBER(artmagic_state::to_shiftreg) { uint16_t *vram = address_to_vram(&address); if (vram) memcpy(shiftreg, &vram[address], 0x400); } TMS340X0_FROM_SHIFTREG_CB_MEMBER(artmagic_state::from_shiftreg) { uint16_t *vram = address_to_vram(&address); if (vram) memcpy(&vram[address], shiftreg, 0x400); } /************************************* * * Custom blitter * *************************************/ void artmagic_state::execute_blit() { uint16_t *dest = m_blitter_page ? m_vram0 : m_vram1; int offset = ((m_blitter_data[1] & 0xff) << 16) | m_blitter_data[0]; int color = (m_blitter_data[1] >> 4) & 0xf0; int x = (int16_t)m_blitter_data[2]; int y = (int16_t)m_blitter_data[3]; int maskx = m_blitter_data[6] & 0xff; int masky = m_blitter_data[6] >> 8; int w = ((m_blitter_data[7] & 0xff) + 1) * 4; int h = (m_blitter_data[7] >> 8) + 1; int i, j, sx, sy, last; #if 0 { static uint32_t hit_list[50000]; static int hit_index; static FILE *f; logerror("%s:Blit from %06X to (%d,%d) %dx%d -- %04X %04X %04X %04X %04X %04X %04X %04X\n", machine().describe_context(), offset, x, y, w, h, m_blitter_data[0], m_blitter_data[1], m_blitter_data[2], m_blitter_data[3], m_blitter_data[4], m_blitter_data[5], m_blitter_data[6], m_blitter_data[7]); if (!f) f = fopen("artmagic.log", "w"); for (i = 0; i < hit_index; i++) if (hit_list[i] == offset) break; if (i == hit_index) { int tempoffs = offset; hit_list[hit_index++] = offset; fprintf(f, "----------------------\n" "%s:Blit from %06X to (%d,%d) %dx%d -- %04X %04X %04X %04X %04X %04X %04X %04X\n", machine().describe_context(), offset, x, y, w, h, m_blitter_data[0], m_blitter_data[1], m_blitter_data[2], m_blitter_data[3], m_blitter_data[4], m_blitter_data[5], m_blitter_data[6], m_blitter_data[7]); fprintf(f, "\t"); for (i = 0; i < h; i++) { for (j = 0; j < w; j += 4) fprintf(f, "%04X ", m_blitter_base[tempoffs++]); fprintf(f, "\n\t"); } fprintf(f, "\n\t"); tempoffs = offset; for (i = 0; i < h; i++) { last = 0; if (i == 0) /* first line */ { /* ultennis, stonebal */ last ^= (m_blitter_data[7] & 0x0001); if (m_is_stoneball) last ^= ((m_blitter_data[0] & 0x0020) >> 3); else /* ultennis */ last ^= ((m_blitter_data[0] & 0x0040) >> 4); /* cheesech */ last ^= ((m_blitter_data[7] & 0x0400) >> 9); last ^= ((m_blitter_data[0] & 0x2000) >> 10); } else /* following lines */ { int val = m_blitter_base[tempoffs]; /* ultennis, stonebal */ last ^= 4; last ^= ((val & 0x0400) >> 8); last ^= ((val & 0x5000) >> 12); /* cheesech */ last ^= 8; last ^= ((val & 0x0800) >> 8); last ^= ((val & 0xa000) >> 12); } for (j = 0; j < w; j += 4) { static const char hex[] = ".123456789ABCDEF"; int val = m_blitter_base[tempoffs++]; int p1, p2, p3, p4; p1 = last = ((val ^ m_xor[last]) >> 0) & 0xf; p2 = last = ((val ^ m_xor[last]) >> 4) & 0xf; p3 = last = ((val ^ m_xor[last]) >> 8) & 0xf; p4 = last = ((val ^ m_xor[last]) >> 12) & 0xf; fprintf(f, "%c%c%c%c ", hex[p1], hex[p2], hex[p3], hex[p4]); } fprintf(f, "\n\t"); } fprintf(f, "\n"); } } #endif g_profiler.start(PROFILER_VIDEO); last = 0; sy = y; for (i = 0; i < h; i++) { if ((i & 1) || !((masky << ((i/2) & 7)) & 0x80)) { if (sy >= 0 && sy < 256) { int tsy = sy * 0x200; sx = x; /* The first pixel of every line doesn't have a previous pixel to depend on, so it takes the "feed" from other bits. The very first pixel blitted is also treated differently. ultennis/stonebal use a different encryption from cheesech, however the former only need to set bits 0 and 2 of the feed (the others are irrelevant), while the latter only bits 1 and 3, so I can handle both at the same time. */ last = 0; if (i == 0) /* first line */ { /* ultennis, stonebal */ last ^= (m_blitter_data[7] & 0x0001); if (m_is_stoneball) last ^= ((m_blitter_data[0] & 0x0020) >> 3); else /* ultennis */ last ^= (((m_blitter_data[0] + 1) & 0x0040) >> 4); /* cheesech */ last ^= ((m_blitter_data[7] & 0x0400) >> 9); last ^= ((m_blitter_data[0] & 0x2000) >> 10); } else /* following lines */ { int val = m_blitter_base[offset & m_blitter_mask]; /* ultennis, stonebal */ last ^= 4; last ^= ((val & 0x0400) >> 8); last ^= ((val & 0x5000) >> 12); /* cheesech */ last ^= 8; last ^= ((val & 0x0800) >> 8); last ^= ((val & 0xa000) >> 12); } for (j = 0; j < w; j += 4) { uint16_t val = m_blitter_base[(offset + j/4) & m_blitter_mask]; if (sx < 508) { if (h == 1 && m_is_stoneball) last = ((val) >> 0) & 0xf; else last = ((val ^ m_xor[last]) >> 0) & 0xf; if (!((maskx << ((j/2) & 7)) & 0x80)) { if (last && sx >= 0 && sx < 512) dest[tsy + sx] = color | (last); sx++; } if (h == 1 && m_is_stoneball) last = ((val) >> 4) & 0xf; else last = ((val ^ m_xor[last]) >> 4) & 0xf; { if (last && sx >= 0 && sx < 512) dest[tsy + sx] = color | (last); sx++; } if (h == 1 && m_is_stoneball) last = ((val) >> 8) & 0xf; else last = ((val ^ m_xor[last]) >> 8) & 0xf; if (!((maskx << ((j/2) & 7)) & 0x40)) { if (last && sx >= 0 && sx < 512) dest[tsy + sx] = color | (last); sx++; } if (h == 1 && m_is_stoneball) last = ((val) >> 12) & 0xf; else last = ((val ^ m_xor[last]) >> 12) & 0xf; { if (last && sx >= 0 && sx < 512) dest[tsy + sx] = color | (last); sx++; } } } } sy++; } offset += w/4; } g_profiler.stop(); #if (!INSTANT_BLIT) m_blitter_busy_until = machine.time() + attotime::from_nsec(w*h*20); #endif } READ16_MEMBER(artmagic_state::artmagic_blitter_r) { /* bit 1 is a busy flag; loops tightly if clear bit 2 is tested in a similar fashion bit 4 reflects the page */ uint16_t result = 0xffef | (m_blitter_page << 4); #if (!INSTANT_BLIT) if (attotime_compare(machine().time(), m_blitter_busy_until) < 0) result ^= 6; #endif return result; } WRITE16_MEMBER(artmagic_state::artmagic_blitter_w) { COMBINE_DATA(&m_blitter_data[offset]); /* offset 3 triggers the blit */ if (offset == 3) execute_blit(); /* offset 4 contains the target page */ else if (offset == 4) m_blitter_page = (data >> 1) & 1; } /************************************* * * Video update * *************************************/ TMS340X0_SCANLINE_RGB32_CB_MEMBER(artmagic_state::scanline) { offs_t offset = (params->rowaddr << 12) & 0x7ff000; uint16_t *vram = address_to_vram(&offset); uint32_t *dest = &bitmap.pix32(scanline); const pen_t *pens = m_tlc34076->pens(); int coladdr = params->coladdr << 1; int x; vram += offset; for (x = params->heblnk; x < params->hsblnk; x++) dest[x] = pens[vram[coladdr++ & 0x1ff] & 0xff]; }